Image: Eureka Prize: Birefringence In A Plastic Coat Hanger
For promotion of New Scientist Eureka Prize for Science Photography only.
This is a photomicrograph showing the birefringent properties of a transparent plastic coat hanger under darkfield illumination. The array of colours is produced by employing a system of cross-polarisation, which makes visible the internal stresses within the structure of the material. The polariscope allows the levels of strain within the plastic to be shown, characterised by the quantity of colour bands visible.
- Sofie Muceniekas
- © Sofie Muceniekas